Hi welcome to the health care magic Cough can occur because of acid reflux disease but dyspnea usually not from acid reflux disease unless and until from complicated reflux and pressure on respiratory tract.... If you are having acid reflux disease and no improvement then better to rule out Hiatus hernia like condition from endoscopy or barium x ray If reflux not associated then for dyspnea spirometry and chest x ray like investigation needs to be done If you are having any positive cardiac history then provide it If no cause found then stress history should be taken to rule out panic attack So this much evaluation should be done according to need after examination Consult good physician or pulmonologoist for examination and discuss your case Take care